Nick Chubb is PFF's highest-graded RB in 2018

There is still one week to play, but entering Week 17, Browns rookie Nick Chubb sits atop the season grading at running back. Pro Football Focus grades every player on every play of every game, and through 15 games, the Browns rookie has earned their top score for 2018.

Chubb tops an impressive list which also includes rookie Saquon Barkley. The Browns second-rounder leads the NFL in yards after contact and set the team record for the longest run in franchise history.